my neighbor has a yard sell of 2 of these GPU 1 is the r9 280x selling for $70 the other is a GTX 780 selling for $80, those are some good deals so i decided to buy 1 but i can't decide which one to buy so my neighbor decide to not sell these 2 GPU to anyone and gave me 2 days to choose these GPU. So the question is is the r9 280x the same performance as a GTX 780 , I heard that Kepler technology age poorly and gcn architecture age like fine wine, so is it true the r9 280x is now the same performance as a GTX 780 even though the r9 280x has a cheaper MSRP than a GTX 780? If i go for the r9 280x i would at least save $10 to spend on other things.